fix: 修复配额说明重复和undefined问题

- 在editStorageForm中初始化oss_storage_quota_value和oss_quota_unit
- 删除重复的旧配额说明块，保留新的当前配额设置显示

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/node_modules/lodash/_charsEndIndex.js

@@ -0,0 +1,19 @@
+var baseIndexOf = require('./_baseIndexOf');
+
+/**
+ * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
+ * that is not found in the character symbols.
+ *
+ * @private
+ * @param {Array} strSymbols The string symbols to inspect.
+ * @param {Array} chrSymbols The character symbols to find.
+ * @returns {number} Returns the index of the last unmatched string symbol.
+ */
+function charsEndIndex(strSymbols, chrSymbols) {
+  var index = strSymbols.length;
+
+  while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
+  return index;
+}
+
+module.exports = charsEndIndex;